Alloy round, boom tube - 11.0 mm (7/16 in) Ø

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