1310 Watch Mainspring 2.80 x 0.18 x 540 (21 1/4") (Calibers in description)
Dimensions: 2.80 x 0.18 x 540 (21 1/4")
End Type: T end
Material: Swiss Made unbreakable
Calibers:Β
Hamilton 317, 318, 718041, 954, 956, 960, 961, 962, 963, 964, 965, 966, 967, 968, 969, 970, 971, 972, 973, 974, 975, 976, 977, 978, 990, 991, 993, 994

Description
Dimensions: 2.80 x 0.18 x 540 (21 1/4")
End Type: T end
Material: Swiss Made unbreakable
Calibers:Β
Hamilton 317, 318, 718041, 954, 956, 960, 961, 962, 963, 964, 965, 966, 967, 968, 969, 970, 971, 972, 973, 974, 975, 976, 977, 978, 990, 991, 993, 994
