Multi-Function Bike Bicycle Cycling Mechanic Repair Kit - Chain Breaker and Chain Checker Include 6 Pairs Bicycle Missing Link for 6, 7, 8, 9, 10 Speed Chain, Reusable;

Chain Wear Indicator:
A worn chain shifts poorly and wears sprockets at an accelerated rate. 0.75% and
1%, the points at which chain experts suggest replacement.
A must for checking your children's bike.
And a best tool for a bike shop.

Chain Splitter:
Designed to quickly and accurately remove and install chain pins.
Along with superior strength and durability, it features a handy "loosening shelf" to
remedy stiff links after reassembly.
The fine thread and comfortable size enable easy removal of even the toughest chain pins.
Fits the following : Common bicycle chains of6/ 7/8/9/10 speed, Works for all common bicycle chains.

bicycle missing link
Compatibility:
Because 6, 7, 8 speed chain of bike width is 7.1 mm, so the 6, 7, 8 speed missing link chain is compatible to all 6, 7, 8 speed chain.
Because 9 speed chain of bike width is 6.6 mm, so the 9 speed missing link chain is compatible to all 9 speed chain.
Because 10 speed chain of bike width is 5.9 mm, so the 10 speed missing link chain is compatible to all 10 speed chain.

Package includes:
1 x chain tool
1 x chain checker
6 Pairs bicycle missing link for speed chain