Model Rocket Engine Holder

2 holders designed for Estes Model Rocket Engines sizes A,B,C, and D. One holder (filename “3 ABC Engine Holder”) has 3 spots for engines.The other model (filename “2 D Engine Holder”) has 2 spots for D engines. The model is 60mm x 75mm, with the A,B, and C holder being 11mm tall and the D holder being 14mm tall. Print Settings: Walls - 2Infill - 8%Brim - If necessarySupports - No Boost MeIf you like this model, please consider giving me a boost. Thanks!