M1100 – Heavy Duty 1in Drive 24T Ratchet The heavy duty 1in drive ratchets are manufactured to full professional quality standards and feature removable heads and flip reverse action. Knurled handle. Length: 665mm Weight: 4.4kg All Teng Tools ratchets should be cleaned and maintained on a regular basis to reduce wear and to prolong life. However with all tools involving moving parts some wear will occur with time. Teng Tools offer a full range of complete service kits and spare parts for their ratchets full details available from your local Teng Tools stockist.