Web M.B.™

MSRP: $229.95
(You save $85.00 )
(7 reviews) Write a Review
Factory Finish:
500, 1000 Siaair / Crown Factory Compound
Flare Potential:
Weightblock Type:
Spheroid Asymmetrical
Coverstock Type:
Semtex NE Pearl Reactive
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The Web M.B. (Mass Bias) booms on the backend, its shiny finish and easy length create a perfect match with the Black Widow 2.0. The cover is a familiar and popular Semtex base, found on previous Black Widow balls, and is enhanced with new additives for ideal performance on medium oil.


The Web M.B. incorporates an elongated version of the Spheroid Core shape, creating asymmetry and more ball reaction shapes for the Web and Hammer lovers.

Hammer recommends Tough Scrub to keep your Web M.B. Performing its best!


  • PART NUMBER 60-106428-93X
  • COLOR Dark Blue / Purple
  • CORE Spheroid Asymmetrical
  • CORE TYPE Asymmetric
  • COVERSTOCK Semtex NE Pearl
  • COVER TYPE Pearl Reactive
  • FINISH 500, 1000 Siaair / Crown Factory Compound
  • WEIGHTS 16-12 Pounds
  • LANE CONDITION Medium oil
  • REACTION Skid / Flip
  • WARRANTY Two years from purchase date


  • 16 lb - RG (2.490) DIFF (0.042) ASY (0.017)
  • 15 lb - RG (2.480) DIFF (0.048) ASY (0.018)
  • 14 lb - RG (2.520) DIFF (0.047) ASY (0.018)
  • 13 lb - RG (2.589) DIFF (0.043) ASY (0.011)
  • 12 lb - RG (2.612) DIFF (0.043) ASY (0.011)

7 Reviews Hide Reviews Show Reviews

  • 5
    The WEB M.B.

    Posted by C Miller on May 15th 2021

    The Web MB is a ball I found that gets down lane cleanly, while storing energy for that strong backend motion, and exceptional hitting power. I see this ball in play on the medium length/volume oil patterns. Looks good on you normal house shots, too. The MB is a great middle man for the Black Widow 2.0 and the Web Tour Hybrid. Needing to fill a 3 ball tote, this is it!

  • 5
    Great Piece for Every Bag!

    Posted by Matthew Staninger on Jan 29th 2021

    The Web MB is much cleaner and more angular than I would've guessed before drilling. It retains energy really well and gives the hitting power of an asymmetrical ball!

  • 4
    Hammer Web MB

    Posted by Bob Newman on Jan 11th 2021

    Hammer has taken my favorite core and made a very dynamic reacting bowling ball. It has a true skid/flip reaction with this pearl cover stock. I mean it really dives through the pins when it sees friction. It has an extremely hard hitting shape that gives me some awesome looking strikes. Get it on the right condition and I could see some really big scores with this one.

  • 5
    Excellent benchmark pearl for me

    Posted by Scott Crawford on Dec 21st 2020

    The Hammer Web M.B. is an excellent benchmark pearl. Mine is drilled 55 x 3.75 x 20 which has pretty good length but still reads the mid-lane some and has good backend reaction and continuation through the pins, but it’s not real flippy. Very controllable and reliable reaction. The hit and carry is big and this will be the first ball out of my bag often on house shots and medium to slightly oily patterns and allows me to play comfortably in the track area and stick with this ball even as I go left a good bit too before going to something more skid / flip. The Web series is great and this is an excellent asymmetric addition. https://youtu.be/j0CEaw64uXo

  • 5
    Hammer MB

    Posted by Joseph Petrovich on Dec 12th 2020

    The Web M.B. (Mass Bias) booms on the backend, its shiny finish and easy length create a perfect match with the Black Widow 2.0.

  • 5
    50 x 4 x 75 – PAP 4 ½ -> and ½^ - Speed – 15mph – Rev Rate 380

    Posted by Christopher Doerr on Dec 8th 2020

    50 x 4 x 30 – PAP 4 ½ -> and ½^ - Speed – 15mph – Rev Rate 380 This layout went fairly long for me when I threw the first few shots. I used it when the lanes were breaking down and the ball performed how I would have expected it to roll. Clean, strong and plenty of hitting power left over. When I decide to drill another one, I would go stronger with the layout. I could always adjust the surface to use the ball when the lanes are more fresh.

  • 5
    Great Addition To The Web Series!

    Posted by Andrew Jensen on Nov 28th 2020

    The Hammer Web M.B. is one of the best performing Web balls that I have thrown, to date. Stretching the core to add a little bit of Asymmetry, really added more bang for your buck to this ball. When I roll this ball, I see the normal overall shape that we’ve seen with the Web series. But, there is a difference. This one grabs the end of the pattern better than it’s previous releases. As it should, considering the asymmetry of the core. I find more uses for this one because of its asymmetry. This release allows me to play the fresh with it, up the lane. It also allows me to go to it after my Hammer Black Widow 2.0 has become too early. Playing a deeper line at that point and needing better change of direction down-lane. This Web M.B. is a great selection to add to your bag. Especially if any of the above (reasons it rolls good) apply to you. One more additional thought to add. I didn’t have to hit the surface with an abralon pad. Ball was perfect out of the box. Andrew Jensen Bowlersmart Rockford Cherry/South Beloit Manager Track Regional Elite/Coolwick Staff

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