BB-UN300 Square Type Bottom Bracket Softball Bats Auto-locking technology for safe and

Auto-locking technology for safe and easy set up

Fully adjustable belt eliminates bouncing or shifting

The targets can be quickly assembled (no tools required

Designed for reservoirs featuring the Quick Link system for easy click on and off (sold separately)

hard water minerals

BB-UN300 Square Type Bottom Bracket Softball Bats Auto-locking technology for safe andThe Shimano BB UN300 Bottom Bracket is a quality square type bottom bracket for your standard chainset. Get improved durability and a smooth ride. Cartridge bearing square bottom bracket MTB standard structure Better chain line stability with chain line stabilizer Tourney A070 Series Shimano high quality performance Adapter material: Aluminum Bottom Bracket Shell I. D.: 1. 37 Threaded BB shell width: 68mm BB Frame Interface: English