Kit #10 Consists of a total of 100 general purpose coil springs selected especially for use with H&R, Iver Johnson and similar type revolvers. Supplied are 10 different spring designs, 10 of each design. All springs have extra coils to allow fitting. Springs are intended to function as barrel latch springs, extractor springs, firing pin springs, and sear springs among others.

BLITZPAK #10 consists of a total of 10 springs, 1 of each spring as described in Kit #10