!Black/Blue/Gray Swivel Booklet Stapler Multi-angle Rotation Bindery 25 Sheet Capacity Swivel angle: 0b, 90b,180b, 270b, 360b Throat depth: 9mm,Total length: 145cm/5.7" With Swivel head, can meet the need of temporary stapling Can staple up to 25 pages(80gsm paper) at once Round plastic head,no pain after using for a long time