Features: Pivot: 1/4" Ceramic Bearings: 1/16" 13 ball bearing. Bronze race washers. ID: 0.252" OD: 0.42" Thickness: 0.05" Description: Skiff Made Blades make these bearings and they come in a set of two. Cage bearings like these give support to the blade as it flips and moves. The maintenance and installation processes are made more accessible because the the balls are held by a hardened race washer. Get these bearings to customize a knife or use them as replacement bearings! They are great knife accessories! Compatible with: Bestech Falko, Kendo Titanium Cheburkov Small Strizh (bearings) Emerson Rangemaster Sheepdog Heretic Wraith Automatic Hinderer XM-18 3.5" Kizer Sheepdog SOG Kiku XR Spyderco Domino, Southard WE 037, Mini Buster ZT 0308, 0393