1.Warm Reminder ：Make Sure the Spindle Hole of your Pressure Baby Gate can fit the M10(10mm) Bolts Size,This item only fit for M10 Spindle Hole, NOT FOR 8mm screws. 2.Pack of 4. Size: 10 mm x 80 mm/ 0.4inchx 3.15inch. Metal material, durable and reusable. Easy to install, no need to use tools and no hole for wall. 3.Adjustable lenth bolts. Baby door pressure mounting screw bolts for top and bottom, Fit for most place, such wall, stairs,wooden etc. 4.Rubber ends to protect your staircase from being scratched, Makes it possible to mount a Baby safety gate on stairs up against a baluster, round pole. 5.Fit for most of pressure Gates ( 10mm) , including baby gates, pet gates, Walk through Extra Wide, Tall Safety Children Proof Gates With Door. 4pcs Pressure Baby Gate Screw Threaded Spindle Rods Walk Thru Gates Accessory - M10 x 10MM Product Name: 4pcs Pressure Mounted Baby Gates Threaded Product material: metal/abs Product color:orange Product size: M10 thread; 80mm x 35mm Product weight:292g Package Contents: 4 X Screw Mounted bolts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.