This is Titan 1/10 Body Hole Reinforcement Tape (20).
The new Titan Body mounting hole reinforcement tape was designed for 1/10 and 1/8 body shell. It was made by high quality 0.2mm PET sheet with strong adhesive. There are 2 options for this new tape.
The #60309 ( 1/10 Body Hole reinforcement) was designed for 1/10 scale applications with the 6.5mm inner diameter and 30mm outer diameter.
The #60310 (1/8 Body Hole Reinforcement) was designed for 1/8 scale applications with the 8mm inner diameter and 40mm outer diameter.
Both options are sold with 20pcs per pack. It is very useful to protect all kinds of body thickness especially those light and ultra-lightweight ones.