Replacement silicone insert for current (2015-present) BookArc for MacBook Adds compatibility for 14-inch MacBook Pro (M1, 2021) and 13-inch MacBook Pro (2020) Not compatible with BookArc mod, BookArc for MacBook Air or the previous version of BookArc for MacBook Previous versions of BookArc came with numbered inserts (1-8) while current BookArc has lettered inserts (A-H)
