Alloy round, boom tube - 11.0 mm (7/16 in) Ø
Details
Alloy round, 11.0 mm (7/16 in) Ø, boom spar only - no fittings.
7075 alloy T6 hardness. 54 grams/metre. Choose length and colour required.
Although an Imperial size SAILSetc supplies a large number of co-ordinated fittings that work well with this spar material.
Drill blocks to assist drilling holes for the 87Z sheet hook are available - link.
Boom fitting alignment blocks to assist the correct alignment of fittings on a round spar are available - link.
Guidance on pens suitable for marking difficult surfaces - here.
Formerly coded AR-110-BOOM