STRUMHARD Guitar Soundhole Guard/Soundhole Pick Strike Protector/Deflector (Clear) Deflects Damaging Pick Strikes To Sound Hole Edges, Rosette & Soundboard, Top & Bottom. (1 Set Of 2 Clear Soundhole Guards). Easily & Securely Attaches To The Sound Hole, Does Not Effect Acoustical Properties Of The Guitar. The Patented Soundhole Guard Was Designed To Deflect & Prevent Drag, Skidding & Damage From Pick Strikes. Made Of Durable ABS Plastic Which Best Mimics Properties Of Pick Guards For Fluent, Uninterrupted Strumming Motion. Fits Most New, Used & Vintage Acoustic Guitars With 3-1/2" To 4-1/2" Diameter Sound Holes & .100 - .150 (2.54mm - 3.81mm) Thick Sound Boards. Why strum lightly when you can strum hard with confidence! Will not hinder or change the acoustical properties of your guitar. Deflects damaging pick strikes to the soundhole edges, soundboard and rosette. Protect you new, used and vintage guitars with the patented Soundhole Guard by Strumhard. Made of durable abs injected molded plastic. Can easily be installed and removed without damage to your guitar. Will not cause drag or interupted strum patterns as the Soundhole Guardbest mimics charastics of your pick guard.