Park Tool BBT-49.3 Bottom Bracket Tool - 16 Notch Regular price $29.95 Quantity - + Fast Free Shipping Over $100 Expected Ship Date: Mon 01 December 3% Cashback As Store Credit Buy now 0 Details Park Tool BBT-49.3 Bottom Bracket Tool - 16 Notch. Park Tool bottom bracket tools for installation and removal of 16 notch bottom brackets.