Proper spin depends on the correct hole location. Unlike some stinger missile kits available on the market with adjustable drill fixtures, which are fabricated out of angle iron and hard to hang onto, these high-quality aluminum blocks are fully machined. They hold the loaded rocket case firmly and in the correct position for drilling.
No by-gosh and by-golly engineering on this one. Repeatable results every time. The fixture comes complete with drill bit.
