When you want to build a two-speed mainsheet system and have the leads rotate under high loads toward the trimmer, combine Harken's Double Cam Base ﾖ Swivel with Harken's Double Ratchet Block. It also accepts 2 in (57mm) and 3 in (75mm) blocks. Its ball bearing swivel base features dual rows of Delrin ball bearings and a stand-up spring. The Cam-Matic accepts a minimum line diameter of 5/16 in (8mm) and a maximum line diameter of 3/8 in (10mm).
|Fasteners (in)||#10 (x4)|
|Fasteners (mm)||5 (x4)|
|Hole Spacing (in)||3/4 (x4)|
|Hole Spacing (mm)||19 (x4)|
|Max Line Size (in)||5/16 - 7/16|
|Max Line Size (mm)||8 - 11|
|Note||Blocks Suited: 57mm, 2.25", 3.00", Double Ratchets|