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Lezyne Ratchet Drive. Durable and compact chrome plated ratchet tool designed for bicycles. Fine tooth ratchet with reversing lever and a fixed opening on opposite end. Tool selection optimized for road gravel and mountain bikes. Super hard CRV (chrome vanadium) bits. Custom machined aluminum extension adapter with laser etched logo. Integrated magnet holds tool bits in place. Ratchet Kit comes in a compact soft shell carrying case.Tool Bits-Hex 2 2.5 3 4 5 6 8mm Star Shaped T10 T25 T30 Flat Head Phillips-Head