Washer 3 x 8mm (10)

APC

APC 10 x 3 Sport

Screw Cap 4-40 x 3/8" (10)

K S Metals

Rnd Aluminum Tube: 8mm OD x 0.89mm Wall x 300mm Long (1 Piece)

K S Metals

Rnd Aluminum Tube: 8mm OD x 0.45mm Wall x 300mm Long (2 Pieces)

K S Metals

Round Brass Tube: 8mm OD x 0.45mm Wall x 300mm Long (2 Pieces)