The Astro Pneumatic Tool 78319 19-Piece 3/8" Drive Low Profile Nano Impact Socket 6-24mm - No Skips are 35% shorter than shallow impact sockets and 15% shorter than other stubby impact sockets at a 0.88" (22.5mm) long. All sockets in this set feature a 17mm outside hex for increased access when used with a wrench and are forged from CR-MO with superior material thickness between socket body and drive compared to other sets.