(click to enlarge) HUDY bearing presser adaptor for .12 engines made from black hardcoated 7075 T6 aluminum for unsurpassed lifespan and durability. All parts are CNC-machined for ultra-high precision. Lightweight design and compact size, easy and comfortable to use. For use with #107061 Collet 11.5mm for .12 Engine Bearing. (click to enlarge)