This is a set of ten 10mm x 1.25 thread head bolts for 1981-88 fuel injected Fiat and Bertone X1/9s, 1981-on SOHC Fiat Strada, and Yugo.
R10.9 in strength. 17mm head, so you can use the original factory box wrenches for installation. These are straight-torque bolts as opposed to OEM "torque to yield" taper-shank "stretch bolts".
Requires an alternate torque process to that specified in the factory manual, in three steps: 20ft-lbs / 40ft-lbs / 58ft-lbs.
Matched set, 5 long (100mm), 5 short (80mm). Slightly different in overall length and grip length from factory bolts, but fully suitable for the application.
New and unused. (Re)build that FI engine with confidence!