Switch to change ratcheting direction built into handle to prevent accidental change. Sizes: 8 x 10 & 12 x 13mm. 9 x 11 & 14 x 15mm. 16 x 17 & 18 x 19mm. 3 piece set supplied in tool roll. Double Sided and Double Ended provides 12 sizes with just 3 spanners!
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