Quantity For Use- 2 Pieces In Total.For Use On Hinged Doors Where The Installation Of a Standard Door Stop Is Not Desirable. Durable And Secure- Our Unique Rubber Tips Are Designed To Stop Doors Of All Types Without Causing Damage To Your Walls Or Doors. Quality Hardware Which Can Not Break Easily. Easy To Install- Simply Pull The Hinge Pin From One Of Your Door Hinges, Slide The Pin Into The Door Stop And Then Back Into The Hinge. Product Specification- Projection: 2-1/2 From 1/4 Diameter Hinge Pin, Complete With Rubber Stop And Plastic Spacer, 1-5/8 Adjustable Rubber Head Screw; ( Refer To Our Drawing For Details) Reliable Quality- Your Experience With The Product Is Our Guideline. If You Shall Have Any Concerns, Send Us An e-Mail And We Will Get To You Within 24 Hours. If You Are Not Fully Satisfied, Simply Send Them Back For a New Set Or a Full Refund No Questions Asked