Harken Duocam Cam Base — Swivel Magic Marine Maximum line Ø (mm)16 mm

Maximum line Ø (mm)16 mm

Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers

Length (mm)157 mm

A range of styles lets these blocks adapt to almost all control line applications

Harken Duocam Cam Base — Swivel Magic Marine Maximum line Ø (mm)16 mmPart No. 216 Use with57 mm 2. 25" 3. 00" ratchets Ball bearing swivel bases feature dual rows of Delrin ball bearings that swivel freely even under high loads. Bases include stand up springs and a U adaptor to accept a variety of appropriate blocks. The 216 features a second cleat for lines led vertically through the base of the swivel. It is frequently used to combine vang or backstay controls in the same swivel base that handles the mainsheet.