Yale P-M44T-PB Door Security Bolt with Thumbturn, Standard Security, Visi Packed, Suitable for hinged and wooden doors, Brass, Pack of 1 The Yale P-M44T door security bolt with thumbturn is a simple to install solution to help you protect against potential break ins. This product is suitable for wooden doors. The door bolt is concealed within the door for extra protection making potential break ins a lot more difficult. Simple, effective security that anybody can install giving you that additional level of security for the ultimate peace of mind. About this item Door bolt is concealed within the door Suitable for wooden doors Brass finnish The Yale door security bolt is operated by thumbturn on the inside and coin release on the outside. It is concealed within the door for extra protection making potential break ins a lot more difficult. Simple, effective security that anybody can install giving you that additional level of security for the ultimate peace of mind.