Penetration Needle Set of 6

Set of 6 penetration needles, screw-on type, needles for use with the LA-4120 mortar penetration resistance apparatus.

Set includes: 1, 1/2, 1/4, 1/10, 1/20 and 1/40 sq. in (645, 323, 161, 65, 32, 16 mm²).