Ring gear
KS Tools 503.4565 4-in-1 GEARplus reversing double ratchet ring spanner, sizes: 10x13x17x19mm; 4 in 1 reversible double ratchet ring wrench with a size range of 10-19mm for metric fasteners.
KS Tools Duo GEARplus Ratcheting Spanner Set includes 15 fork position, 5 ratchet parts and a dual-direction gear mechanism for efficient fastening and loosening of nuts and bolts.