Make your car unique OfficinaRC keeps working hard on some option parts and is proud to present his brand new grade 5 titanium screw, machined from solid for the Xray X4. OfficinaRC is pleased to present the new screws machined from solid in titanium for the Xray X4. This titanium screw replaces the original screws (301158) and they’re used to set torsion of Xray X4 top deck . These replacement titanium screws improve strength and endurance thanks to their high quality material.