4in. Tall IDPA/ISPC Pistol Rated Knock-overs Set includes six 4in.x2in. targets on 1in.x2in. pads Great for airguns, .22LR rim-fire,.40cal, 9mm,.45acp and most other pistol calibers. Not recommended for .357 or .44 magnum calibers. Manufactured from new high quality 3/8in. thick A36 (mild) steel plate made in the USA Precision cut with a CNC plasma cutter and watercooled during the cutting process to maintain the integrity of the steel, ensuring the longest life of the target. Assembled with strong professional heavy duty welds the full length/contact area of the base