Park Tool BBT-47 Bottom Bracket Tool – 16 Notch

Park Spoke Wrenches are precisely sized for the spoke nipple and made from durable materials that provide years of dependable use.

• Professional quality, precision-sized spoke wrenches are hardened and nickel plated for long service
• Vinyl coated in one of 5 colors to indicate size at a glance
• Fits older Japanese style nipples .136"/3.45mm

With the Park Tool CC-2 Chain Checker you can quickly and accurately determine the wear (or "stretch") of nearly any bike chain. Simply insert the Chain Checker’s pins into two links, lightly press the swing arm gauge, and then check the gauge window for an accurate reading. The CC-2 is compatible with most single-speed and derailleur chains, including Shimano XTR 12-speed chains.

• 5-to-10 speed chains: replace chain at or just before 0.75%
• 11-to-12 speed chains*: replace at or just before 0.5%
• Single-speed chains: replace at or just before 1%
• Check with manufacturer for specific replacement instructions
• *Use the CC-4 for SRAM Flattop and SRAM T-Type 12-speed chains
• Compatible with all bicycle chains
• For modern 9 and 10 speed chains, replace chain at or just before the 0.75% readings
• For 11 speed chains, replace at or just before the 0.5% reading
• Insert the Chain Checker's pins into two links, press the swing arm gauge tight, and check the gauge window for an accurate reading