Found these very useful & avoid any possible damage 
FLAMEER Set of 20 90 Degree Plant Bender Clips Stem Trainer LST Clips Tomato Branches Clamps Twig Clamps Reinforcing Clips Branches Bender - red https://smile.amazon.co.uk/dp/B09C2LCZFY/ref=cm_sw_r_apan_glt_fabc_M4BPHR95MRVWXRRMMFJF?_encoding=UTF8&psc=1