About this 3D model

Beautiful keychain to always have a screwdriver with you with a good grip and with holes to insert 8 screwdriver bits. PRINT SETTING Nozzle Size: 0,4mm Layer Height: 0.3mm Vertical Shells: 2 Top/Bottom Layer: 3 Infill: 15% Time print: 0,50 minutes I leave below a link to buy the chain for the key ring https://www.amazon.it/gp/product/B00UFCLAI4/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 LIHAO 25pcs Portachiavi a Catena Split Ring in Acciaio Inox - Diametro:25mm https://www.amazon.it/dp/B00UFCLAI4/ref=cm_sw_r_cp_api_glt_i_398NN8BSK23BZC37WT3B?_encoding=UTF8&psc=1 Update: below you will find a link to download the update stl to get more grip on the handle https://www.prusaprinters.org/it/prints/87657-knurled-ring-for-bit-holder