Use tool bit up to 1/2" and round shank tool bits up to 7/16". 250-104 Heavy Duty Boring Bar Holder. Use 5/8 and 3/4 shank boring bars. 250-107 Parting Blade Tool Holder, use 1/2 high parting blades.250-110 Knurling and Turning Tool Holder. Quantity:1pc Tool Host and 5pcs Tool Holders. Our office hours are every day except Sunday, but the processing time is uncertain, we will process your problem on the same day. And our office is closed on Sunday and we apologize for the late reply during the holidays. Yard, Garden & Outdoor Living. Engine Rocker Arm Shaft Sleeve. Auto Inlet & Outlet System. For Router Fan Variable Speed Controller Electric Motor Rheostat AC 120V Newest. Carburetor Without Solenoid Valve For 591378 796321 696132 696133 699966 796322. 10Air Filter for Echo 13031054130 A226001410 Trimmer Blower SRM210 SRM225 HC150. 12Pcs ER16 1/32"-3/8" Spring Collet Set For CNC Milling Lathe Tool. Fit For Carburetor 498298 495426 692784 495951 5HP Lawn Mower.