100 Plus® 8 Pc Combination Screwdriver Set, Phillips®, Slotted, 1 4 in, 7 32 in, 5 16 in, 3 8 in no checkout and delicate projects Turn screw to and delicate projects Turn screw to adjust pressure and fit Constructed of high grade heat treated alloy steel Guarded release trigger quickly unlocks and protects from accidental release Roughneck caps are built to provide exceptional crack resistance and handle hard knocks in the toughest places The P2A series tolerates heat up to 370° wile delivering a long service life under many adverse conditions The P2HN series is designed for high performance at extremely elevated temperatures up to 500° in these extreme environments Acetate handle stands up to heavy duty industrial use Precision cold formed Phillips® tips provide high torque performance Black oxide Phillips® tips provide corrosion resistance and precise fit Easy to clean handles Durable alloy steel blade withstands repeated use