Product details:

Multi-colored rocks: Yellow, orange, green, red and blue The rocks are textured for easy gripping and skin-friendly Available in sets of 25. Five sets of 3 different shapes The average dimension of each rock is about 4.2 x 3.4 and holds up to 440lb per hold this weather resistant rock holds boasts strength you can count on The hardware (self-drilling nuts & bolts of 2.5) are Included.