Prokomon Adjustable Pulley Holder Tool Kit 32–127mm span, 15-piece pin wrench set with 7 pin sizes

The Prokomon 15PCS Universal Pulley Holder Tool Kit is an adjustable pin-wrench set with seven interchangeable pin sizes and a 32–127mm span designed to hold and remove camshaft, crankshaft, and blower pulleys across cars, motorcycles, scooters and bicycles.

This compact kit centralizes the frequently needed tools for pulley retention and removal into one durable, portable package. Built from high-strength steel with a frosted grip and supplied in a plastic carry case, the set replaces multiple single-size tools and adapts to a wide variety of pulley diameters and pin-hole configurations. It’s intended for mechanics, hobbyists, and DIYers who work on engines and belt-drive systems and need a reliable, adjustable holding tool.

How does this pin wrench adapt to different pulley sizes?

The Prokomon holder uses a sliding arm and tightening bolts to change its span, letting the pin positions be moved between 32 mm and 127 mm (1-1/4" to 5"). By inserting matching pins into the wrench body you can line up with different hole patterns on pulleys and clutches.

• Adjustable span: 32–127 mm for varied pulley diameters
• Seven pin sizes cover common hole diameters
• Locking bolts secure the set length during use

Which pin sizes are included and what jobs do they fit?

The kit supplies 14 pins across seven diameters (two of each size) so you have spares and can mix for asymmetric hole layouts. These pin sizes suit many camshaft, crankshaft and blower clutch applications found on cars, motorcycles, scooters and some bicycles.

• Pin diameters: 3.5 mm, 4 mm, 4.5 mm, 5 mm, 6 mm, 6.5 mm, 10 mm
• Two pins of each size for paired-hole setups or backups
• Works with common automotive and small-engine pulleys

Is the tool durable and easy to handle during repairs?

Yes. The wrench and pins are forged from high-quality steel for strength and corrosion resistance, while a frosted handle provides a non-slip grip. The set’s construction stands up to repeated use, and the included case keeps parts organized and protected between jobs.

• High-strength steel construction for longevity
• Frosted handle finish for better grip and control
• Plastic carry case for storage and transport

What simple steps make this kit work in a workshop setting?

Fit the correct pins into the wrench holes to match the pulley’s locating holes, adjust the arm span and tighten the bolts to lock the position. Hold the pulley steady with the wrench while loosening or tightening the central fastener with an impact or breaker bar as required.

• Select matching pins and insert them firmly into the wrench
• Adjust span to align pins with pulley holes, then tighten bolts
• Use with standard sockets, breaker bars or impact tools while holding the pulley

Who this is for: The Prokomon 15PCS Universal Pulley Holder Tool Kit is suited to professional mechanics and knowledgeable DIYers who service engines, belt drives and blower clutches. It’s useful for automotive technicians, motorcycle and scooter mechanics, small-engine repair shops and home garage users who want a single, adjustable tool to replace multiple fixed-size puller or holding wrenches. If you frequently encounter pulleys with varying hole patterns and diameters, this kit simplifies setup, reduces tool clutter and speeds common removal and installation tasks.