This is the tool that I’ve been using in the shop for 25 years. It has cut and riveted hundreds of chains without fail or surprises. The DID KM501E tool is expensive for a chain tool, but I think it’s worth it. I used to carry inexpensive $50 Motion Pro chain tools sets, but I decided to stick with my policy of carrying the stuff I use in the shop. This tool is bulletproof. Hardened steel, few pieces to lose, and it’s simple to use. It can push out pins to break chains and rivet master links. You can purchase less expensive chain tools and have them break, or you can buy the “real deal”. Instruction sheet included.
NOTE: Do NOT overtorque on this tool or you will break the pin. When you feel the master link “give” under the pressure of the pin, ease up on the wrench until the feel is “snug”. You can feel when the pin has stopped mushrooming. Replacement pins are $31 each