With the older style Hasselblad "C" lens, which are commonly silver, the PC sync connection protrudes, nipple-like, straight out of the lens, and is held in place with small mounting screws or rivets. Most PCs, notably those on foreign-made cords, are light in weight and tend to be loose and fall out of the lens. The metal portion of Paramount's Hasselblad "C" tips is much heavier, so they fit tighter, will not fall out, and perform dependably. Also, because the molded section of C tips is narrower, they will not interfere with quick-focus handles as other tips do.
NOTE: This cord should not be used on any lens other than the Hasselblad "C".