This attractive hammer-in edging is made from strong, flexible, everlasting ABS plastic material. Each section locks into the next creating curved or straight shapes around trees, shrubs, lawns and flower beds. Light slate grey in colour and they look hollow from behind. Each block of 3 is 25cm long, 10cm high and the spike is 13cm long. 10 pieces together are 2.5 metres long. Pack contains 10 blocks of 3 stones. Weight of each block is 75g, so total weight is 750g.