The old-timers at the Round Pond in London's Kensington Gardens recommended interlock snaps, because they wouldn't pull open in a gust (or a tree). The word "crane" denotes the swivel design; "interlock" is the snap design. We've been using roughly these two sizes since the mid-1970s, and several are still in use today.
2 sizes: medium and large
nickel plated
Medium: for 50-55lb line |
Length: 2¼" (5.7cm)
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Large: for 80-88lb line |
Length: 2 9/16" (6.5cm)
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