- Purpose and fit - Precision crankset service tool designed for a variety of cranksets, specifically compatible with Shimano M7100, M8100 and M9100 models. - Designed to engage internal teeth and circlips securely, removing play during removal and installation. - Key benefits — why you need it - Reliable engagement: finely machined internal teeth connect firmly to circlips so the tool holds securely during use, reducing slips and damage to crankset parts. - Durable for workshop use: made from high-strength aluminium alloys to resist deformation and withstand repeated repair and maintenance cycles. - Easy handling: lightweight construction reduces fatigue and makes single-handed positioning and turning easier during repairs. - Saves time and risk: precise fit and robust connection reduce the need for rework and lower the chance of damaging expensive crankset components. - Performance and construction - High-quality workmanship ensures consistent tooth profiles and accurate mating with circlips. - Lightweight aluminium alloy balances strength and portability without compromising durability. - Engineered to tolerate the stresses typical in bicycle repair environments. - Practical attributes - Function: secure tool for removal/installation tasks involving internal teeth and circlips on compatible cranksets. - Compatibility: explicitly suitable for Shimano models M7100, M8100 and M9100. - Size and handling: compact, lightweight design for easy use in tight spaces and for transport between field and shop. - Typical use scenarios 1. Routine shop maintenance: use to remove and reinstall cranksets during a drivetrain overhaul without risking damage to circlips or splines. 2. On-the-road repairs: lightweight and compact enough to carry on group rides for quick crankset adjustments or emergency replacement. 3. Pre-ride checks and upgrades: secure engagement makes it easier to fit new crank components accurately and consistently. - What sets it apart - Combines precise machining, secure internal tooth-to-circlip connection, and high-strength aluminium construction for dependable, repeatable performance on M7100, M8100 and M9100 cranksets. - Focused design reduces repair time and minimizes the risk of component damage compared with generic or poorly fitting tools. - Use notes - Confirm compatibility with your specific crankset model (M7100, M8100 or M9100) before use. - Follow standard safety and torque procedures for crankset removal and installation.