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.