

Centering Ring/Engine Block Combo Pack
Combo pack of five popular sizes of our spiral-wound centering rings/engine blocks at a discounted price. 28 total rings, a $9.14 value if purchased individually!
Includes:
4 10.5/5 Rings - Centers T-10.5 Tube into T-5 Tube, also can be used as a 13mm Engine Block for "Mini" Engines
8 5/20 Rings - Centers T-5 Tube into T-20 Tube, also can be used as an 18mm Engine Block for Standard size Engines
8 20/50 Rings - Centers T-20 Tube into T-50 Tube, also can be used as a 24mm Engine Block for most D & E size Engines
2 20/50 Long Rings - Centers T-20 Tube into T-50 Tube. Also can be used as a spacer to fly a standard (2.75" long) 24mm engine in a mount designed for longer (3.75") engines.
6 50/55 Rings - Centers T-50 Tube into T-55 Tube
Includes:
4 10.5/5 Rings - Centers T-10.5 Tube into T-5 Tube, also can be used as a 13mm Engine Block for "Mini" Engines
8 5/20 Rings - Centers T-5 Tube into T-20 Tube, also can be used as an 18mm Engine Block for Standard size Engines
8 20/50 Rings - Centers T-20 Tube into T-50 Tube, also can be used as a 24mm Engine Block for most D & E size Engines
2 20/50 Long Rings - Centers T-20 Tube into T-50 Tube. Also can be used as a spacer to fly a standard (2.75" long) 24mm engine in a mount designed for longer (3.75") engines.
6 50/55 Rings - Centers T-50 Tube into T-55 Tube