All Cartridge Shapes & Styles Stop changing the toolholder! To change shape or size of an insert or holder style, just change the cartridge – one screw. All Holders Available in either Right or left hand orientation. Square shank holders in .75", 1.0", 1.25" and 1.5" square shanks, all styles Boring bars in 1.25, 1.5 & 2"+ Dia. for cartridge system Style F 80° 80°/100° diamond Style G 80° 80°/100° diamond Style K 80° 80°/100° diamond Style L 80° 80°/100° diamond Style R 80° 80°/100° diamond           Style J 55 ° diamond Style A round Style G round Style B square Style K square           Style R square Style S square Style A triangle Style B triangle Style F triangle           Style G triangle Style J triangle Style L triangle Style R triangle Style T diamond