Titan1 XS Mainspring

Titan No 1 XS Mainspring ID 0.575 (1.4605 mm), OD 0.825 (2.0955), wire .125(0.03968 mm), total coils 31, new length 11(27,94 mm) inches, fits BSA Airsporter, Mercury, Challenger, 635 Magnum, Supersport, Lightning, XL, XLSE, Superstar, Goldstar, Centenary, AirArms MK I and MK II, Firepower, Jackal, Woodsman, ProSport: Diana (Original and RWS) 34, 35, 36, 38, 45, 48, 52, 54, and RWS Firebird, Falke 80-90, FWB 12, 120, 124, 127, HW77, 99, etc.