AeroTech 1.9 x 4インチ カプラーチューブ - 11804

The wall thickness on this coupler feels reassuringly solid, not flimsy like some others I’ve handled. It’s exactly 4 inches long, so my staging section came out perfectly aligned without any extra trimming.

Slid right onto my 1.805-inch tube with a snug, satisfying fit—no sanding needed. The 4-inch length gives plenty of surface for a solid glue joint, and this coupler feels sturdy enough for multiple flights.

The wall thickness is spot on at 0.08 inches, so it feels sturdy without adding much weight to the airframe. Slid right over my tubes and the 4-inch length gives plenty of gluing surface for a solid joint.