Post-It® Brand Page Markers. Signets. Important! 5, 50, 1/2 in x 1 3/4 in 12,7 mm x 44,4 mm total 250 cont. 250. 3M. Post-It is a registered trademark of 3M. Used under license in Canada. 1-800-328-6276. www.post-it.com. ©3M 2003. All rights reserved.