E-mail:johncil@126.com SKYPE:xiao10833 MSN:001324@163.com TEL:0086-0755-2650 9935 MOB:0086-13827240316 John Welcome to our company! It's the manual type of the parking barrier(parking lock) to reserve the parking space for the owners. It's controlled by keys. Using keys to lock and unlock it to control it raise up and go down. Easy to operate it. Specification: We have three sizes of this type as below: 1000(length)X204(width)X285(height)mm 1140(length)X204(width)X320(hei ght)mm 1250(length)X204(width)X350(height)mm While usually our oversea customers like the middle and large size more. Feature: 1. Unique design: lock-hole in the left arm or centre, effectively preventing free open parking lock, bearing front and side bump. 2. Highly visible, powder coated yellow durable cold-treated steel 3. Three keys