REUSABLE KIT FOR YOUR SILHOUETTE PRACTICE INCLUDES TICK MARKS FOR EASY LINE-UP AND PLACEMENT OF EACH TARGET. HEAVY-DUTY CORRUGATED SILHOUETTE MAKES FOR LONGER SHOOTING LIFE THAN TRADITIONAL PAPER TARGETS. REPLACEMENT CENTERS ALSO CONSERVE TARGET LIFE ? NO NEED TO REPLACE ENTIRE SILHOUETTE TARGET AFTER EACH USE. MATCHES B27R SPECIFICATIONS.