Gen 2 piston oil squirters are tubular instead of cast like the gen 1 design. This allows adjustment needed when running aftermarket pistons. 

These are for GM Ecotec engines only. LNF/LDK/LSJ/LE5/L61/LE9/etc

Sold in sets of 4. Does not fit LTG engine. Torque spec: 11 ft/lbs.