The Britool 1/4in Drive round head ratchet has a 72 tooth mechanism and a 5° increment. The ratchet has an ergonomic bi-material handle for comfort and the compact head is finished in high chrome. The Britool BRIE030601B round head ratchet 1/4in drive has the following specifications: Length: 140mm Weight: 98g ISO 3315, DIN 3122, ISO 1174-1.