Crown Tools Quick-Release Handles have been developed over several years to provide enhanced grip and convenience. These innovative handles feature self-ejecting heads, making blade changes quick and effortless. The collet is encapsulated within the head, so when you untwist it, the collet releases and loosens the blade with ease. Each handle includes three different size heads: Small (10mm, Gold), Medium (13.2mm, Blue), and Large (16.2mm, Red), ing versatility for various tasks. Model Number: