Suitable for the lathe with center line height Around 0.5 (The top cross slide tool post Mounting Surface to the lathe center line). Such as: South Bend 9" & 10", Atlas 10 & 12, Delta 10, Nardini TT1000 & TT1200 and many other imported lathe.AXA 250-111 Wedge ToolPost Set For Lathe 6 - 12 Plus 2 Extra Tool Holder. 251-111 AXA Size Wedge Type Tool Post 250-101 Turning Tool Holder, use tool bits up to 1/2" 250-102 Boring, Turning Tool Holder, use tool bits up to 1/2" and round shank 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. And One Each Extra 250-101XL, 250-102XL Oversize Slot Tool Holder, use tool bits up to 5/8. If there is any fault or problem with the product, please don't be shy to express it, we will solve it at the first time.