Stockton Chain Tool Replacement Pins Hardened Replacement Tips for the Stockton Chain Breaker are essential for any mechanic, ensuring readiness for chain maintenance or adjustments. This kit, accommodating a variety of chain pitches, includes tips in sizes 2.2mm, 2.9mm, and 3.8mm. Features: Steel hardened replacement pins Kit includes all 3 pins (2.2 mm / 2.9 mm / 3.8 mm) Replacement for Stockton Chain Tool Kit