Insert for GZR 1/4 PDF Print $4.95 SKU: Super Collet Insert Insert for GZR 1/4" Super Collet Add to Wishlist Add to Compare Back to: Driveline Description Insert for GZR 1/4" Super Collet NOTE: THIS INSERT IS FOR THE SUPER COLLET ONLY AND WILL NOTFIT THE STANDARD GZR COLLET.